Windmill-gear.



Patented Oct. 6, 1908.

4 SHEETS-SHEET 1.

7M: uamals PETERS ca, WASHINGTON! n. c

0. L. HUFFMAN.

WINDMILL GEAR.

APPLIOATION FILED JUNE 13, 1907.

Patented 0ct6,1908.

lii'iiilihili 0., wAsHmcroN, 0. c4

0. L. HUFFMAN. WINDMILL GEAR. APPLICATION FILED 311N313, 1907. 900,544Patented 001:. 6, 1908.

4 SHEETS-SHEET 3.

Q/Vi tn mom 3 nvznl oz aflozmua THE NORRIS PETERS CO WASHINGON. D C,

0.-L. HUFFMAN.

' WINDMILL GEAR."

APPLICATION FILED JUNE 13, 190.7.

Patented 0011.6; 1908.

4 SHEETS-SHEET'IL attorney 219i ha use:

THE NORRIS PETERS cm, WASHINGTON, 0. cv

ORLA L. HUFFMAN, OF ERIE, KANSAS.

WINDMILL-GEAR.

Specification of Letters Patent.

Patented Oct. 6, 1908.

Application filed June 13, 1907. Serial No. 378,797.

To all whom it may concern:

Be it known that I, ORLA L. HUFFMAN, a

. citizen of the United States, residing at Erie,

in the county of Neosho and State of Kansas, have invented certain newand useful Improvements in Windmill-Gears, of which the following is aspecification, reference being had therein to the accompanying drawing.

My invention relates to improvements in gearing for converting rotaryinto reciprocatory motion, and more articularly to an im roved gear forwindmill ne object of the invention is to provide gearing of thischaracter which will be simple, strong and durable in construction andoperation, and which will give the ump rod a long straight stroke withpractical y no lateral movement or vibration.

Another object of the invention is to provide an improved means forthrowing the windmill out of operation and braking the movement of itswheel.

A further object of the invention is to improve and sim lify theconstruction and operation of mechanisms of this character and tothereby render the same more durable and efficient and less expensive.

With the above and other objects in view the invention consists in thenovel construction and the combination and arrangement of artshereinafter described and claimed, an illustrated in the accompanyingdrawings, in which Figure 1 is a vertical longitudinal section throughmy improved windmill gear and brakemechanism; Fig. 2 is a verticaltransverse section on the lane indicated by the line 22 in Fig. 1; Flg.3 is a horizontal section on the plane indicated by the line 3-3 in Fig.1; Fig. 4 is a detail perspective of the pump rod slide; Fig. 5 is asimilar view of the removable guide and bearing member of the rotaryhead or turn table Fig. 6 is a front elevation of a modified form of therack yoke; and Fig. 7 is a vertical longitudinal section through thesame.

In the drawings, 1 denotes the rotary head or turn table of the windmillwhich consists of a main body member 2 and a removable guide and bearingmember 3. The main member 2 of the turn table has its lower end shapedto provide a head 4 which is adapted to be mounted for rotation in asuitable bed plate or support and which is provided with aconcentrically disposed depending tubular guide 5. From one side of thehead 4 pro jects a lateral apertured bearing ear 6 and from its oppositeside rises an upright or standard 7 formed at its top with ahorizontally disposed and right angularly projecting bearing 8 and alsooutwardly and oppositely projecting arms 9-, 10, which are disposed in ahorizontal plane and arranged upon the opposite sides of the bearing 8at its inner end. These arms 9, 10 are formed at their ends withapertured projections 11 to which are secured by bolts or the like 12the apertured ends of the member 3. By constructing said arm with theprojections 11 and uniting the member 3 to them, as clearly shown inFig. 3, it will be seen that an opening is provided in the upper ortionof the windmill turn table or hea directly above the tubular guide 5.The member 3 has a vertically disposed portion 13, in the inner face ofwhich is formed a centrally disposed and vertically extending guidegroove or channel 14 and from the outer face of which projects ahorizontally dis osed portion or flange 15 havim its outer e go cut awayor recessed to provide two right angularly disposed stop shoulders 16,17 and also having a vertical aperture 18 arranged in vertica alinementwith the aperture in the bearin lug or ear 6 for a purpose presently expained. The bearing 8 is adapted to receive a shaft 19 of a wind wheel 20which latter has its blades secured upon one side of its hub 21 and uponthe op osite and inner side of the latter is forme an annular frictionbrake surface 22. Said hub 21 of the Wheel is secured upon theprojecting outer end of the shaft 19 preferpreferably V-shaged in crosssection, as

shown, and it is a apted to be engaged by a similar shaped brake shoe 24carried by the upper end of a brake shoe lever 25 pivoted intermediateits ends at 26 u on one side of tho bearing 8. The lower cm of the lever25 is connected by a rod or link 27 to one end of an operating lever 28which latter is pivoted intermediate its ends upon a'vertical bolt orpivot 29 which pivotally connects the hanger 30 of the vane 31 to thelug 6 and the flange 15, as clearly shown in Fig. 1. The brake operatinglever 28 has its free end 32 projec ting normally into the path of aportion of the vane hanger 30, which latter comprises a verticallyextending portion 33 formed upon one side with outwardly projectin arms34 to which the vane 31 is secured an upon its other side with bearinglugs or ears apertured to receive the pivot 29. The hanger 30 is adaptedto swing between the stop shoulders 16, 17 upon the flange 15 of themember 3 and it is held normally against the stop 16 by a coil spring36, as shown in Fig. 3. When in its normal position the vane projects atright angles to the )lane of the wind wheel and hence holds the atter tothe' wind; and when the hanger is swung into engagement with the stop 17the vane is disposed parallel with the plane of the blade for an obviouspurpose. he hanger is swung against the stop 17 to throw the mill out ofgear by drawing downwardly upon a cable 37 suitably attached to the vaneand passed over a grooved wheel or pulley 38 ournaled in a bracket 39upon the arm 9 and also over a similar grooved wheel 40 suitablyjournaled upon the lower portion of the member 2 of the windmill head orturn table. The cable 37 extends downwardly through the tubular guide 5and its lower end hangs within convenient reach at the bottom of thewindmill tower. It will be seen that when the cable is drawn downwardlythe vane will be swung against the stop shoulder 17 to throw the windwheel out of the wind and that when the cable is released the spring 36will restore the vane to its normal position so that the wheel will beheld to the wind.

A cog wheel or pinion 41 and an anti-friction roller 42 are arrangedupon the inner end of the shaft 19, the pinion being fixed to the shaftand the roller loosely mounted. The roller and pinion are disposed in anoblong groove or channel 43 formed in one face of a yoke 44 which has atits upper end an apertured arm 45 by means of which it is suspended inthe opening between the members 2, 3 of the turn table. The pinion 41meshes with a rack 46 of oblong form arranged within the groove 43 andit is kept continuously in engagement with the rack by the roller 42,which latter contacts with the outer wall 47 of said groove, as will bereadily understood upon reference to Fig. 1. The arm 45 of the rack yoke44 is connected by a pivot bolt or the like 48 to the bent or offsetupper end of a slide 49 adapted to reciprocate vertically in the guidegroove 14 formed in the member 3. The lower end of the slide 49 is bentat right angles and apertured to receive the upper end of the pump rod50 or a similar connection which extends downwardly through the tubularguide 5. The pivot bolt 48 also connects the upper ends of the yoke andslide to one end of a link 51 which has its other end pivoted at 52 inthe forked upper end of a bracket 53 which latter has its lower end 54extending downwardly and inwardly and connected to the arm 9 and also tothe base portion of the member 2 so as to form an inyoke 44 and. theslide 49 as they are reciprocated. The swinging movement of the linkcauses the yoke and slide to have a slight lateral movement; and topermit the slide .tmhave such movement, its guide groove 14 is madesulliciently wide, as will be seen upon reference to Fig 3.

In Figs 6 and 7 of the drawings I have illustrated a modified form ofthe rack yoke 44 which may be substituted. for the one shown in theremaining figures of the drawings and described above. This yoke 44 onlydiffers from the yoke 44 in the construction of the rack which, asclearly shown in said 'ligures consists of a vertical row of pins 46projecting from the bottom of the groove 43 and united by a plate or bar46". The pinion 41 which co-acts with this modified form of the rack hasrounded cog teeth, as shown in Fig. 6, so as to more effectively engagethe rack teeth formed by the pins 46.

In. operation, it will be seen, that as the wind wheel rotates, thepinion 41 will actuate the rack 46 and as said pinion travels around therack, the yoke 44 and hence the slide 4f) and the pump rod 50 will bereeiprotaited. ()wing to the peculiar construction and arrangement ofthese parts it will be seen that the pump will be given a long straightstroke with practically no lateral movement or vibration. The latter isprincipally due to the provision of the slide 49 and the pivoting of theyoke 44 at the upper end of the slide. it will be further noted thatthis coi'istruction is compact and at the same time simple, strong anddurable. Y'Vhen it is desired to throw the windmill out of gear it isonly necessary to draw the cable 37 downwardly and to fasten it. \Vhenthis is done, the vane is swung parallel with the wheel so that thelatter will be held out of the wind. Nhen the cable is thus operated tothrow the mill out of gear, the vertical portion 33 of the vane hanger,as the latter swings against the stop 17, will contact and operate theend 32 of the brake operating lever 28 so that the rod or link 27 willbe drawn in a direction to actuate the lever 25 and throw the brake shoe24 into frictional engagement with the brake surface 22 on the hub ofthe wind wheel. This construction therefore simultaneously throws thewind wheel out of gear and brakes its rotary movement.

Having thus described my inventionv what I claim and desire to secure byLetters Patent is:

1. In a gear for a wind mill or the like, the combination of a supportprovided with a bearing and a vertical guide groove or chan- 11elarranged opposite said liiearing, a shaft in the bearing, a pinion uponthe latter, a slide arranged in said guide groove or channel and havingoffset upper and lower ends, a rack yoke to co-act with the pinionarranged ver- The link 51 serves to steady and guide the tically betweenthe offset ends of the slide the bearing, a pinion upon the shaft, aslide arranged in said guide groove or channel, a rack yoke to co-actwith the p1n1on arranged between the slide and the bearing, a ump rodconnected to the lower end of the s ide, a link pivoted at one end uponthe support and a single pivot passing through the other end of thelink, the upper end of the yoke and the upper end of the slide,substantially as and for the purposes set forth.

3. In a gear for a windmill or the like, the combination of a su portprovided with a bearing and a vertica guide groove or chan nel arrangedopposite the bearing, a slide arranged in said guide groove or channel,a pump rod connected to the lower end of the slide, a yoke pivotallysuspended from the upper end of the slide and arranged between the slideand the bearing, said yoke having in one of its faces an oblong groovehaving a continuous outer wall, the inner wall of said groove beingformed with teeth to provide a continuous rack, the latter beingdisposed entirely within the groove, a shaft arranged in said bearingand having one of its ends projecting into the groove in the yoke, apinion fixed u on the outer portion of said projecting en of the shaftand engaged with said rack and a roller journaled u on the inner portionof said projecting en of the shaft and arranged between said pinion andsaid bearing, said roller being adapted to engage the continuous outerwall of the groove in the yoke to hold said pinion in mesh with saidrack, substantially as described.

4. In a wind mill gear, the combination of a support having a horizontalportion formed with stop shoulders 16, 17 arranged substantially atright angles to each other, a vertical pivot, a vane arranged upon saidpivot, a spring for actuating the vane in one direction and holding itnormally against one of said stop shoulders, the brake operating lever32 fulcrumed intermediate its ends upon said pivot and having one of itsends disposed adjacent t0 the other stop shoulder and in the path of thevane, means for actuating the vane against the tension of said spring tocause it to actuate said lever and engage the last mentioned stopshoulder, a Wind wheel, a brake device for the latter, and meansconnected to the other end of the brake operating lever 32 for actuatingsaid brake device, substantially as set forth.

5. In a windmill gear, the combination of a head or turn table having atubular lower portion and an open upper portion provided with a guideand a bearing, a shaft arranged in said bearing, a slide arranged insaid guide and having offset upper and lower ends, a

' pump rod connected to the lower end of said slide and projectingthrough the tubular base portion of the turn table, a yoke having an armat its upper end and an oblong groove in one face with a rack formed insaid groove, a link pivoted at one end to the turn table, a pivotconnecting said link, said arm of the yoke, and the upper end of saidslide, a pinion upon said shaft arranged in said groove inthe yoke andin mesh with said rack and a roller journaled upon said shaft andadapted to engage the outer wall of the groove in the yoke,substantially as and for the purpose set forth.

6. In a Wind mill gear, the combination of a support having a horizontalportion formed with stop shoulders arranged substantially at rightangles to each other, a vertical pivot, a vane arranged on said pivot, aspring for actuating the vane in one direction and holding it normallyagainst one of said stop shoulders, a lever pivoted intermediate itsends and having one end arranged adjacent to the --other stop shoulderand in the path of the vane, means for actuating the vane against thetension of its spring to cause it to operate said lever and to engagethe last mentioned stop shoulder, a wind wheel shaft, an annular brakesurface carried thereby, a brake lever pivoted intermediate its endsupon the support and carrying a brake shoe at one end to engage saidbrake surface and a link connecting the other end of the brake lever andone end of the first mentioned lever, substantially as set forth.

In testimony whereof I hereunto affix my signature in presence of twowitnesses.

ORLA L. HUFFMAN.

Witnesses:

R. O. JoHNsoN, ETTA ToM.

